
The MDDTs are computed, similarly to in [1]} and [2]}, by applying a rotation of \(\text{arg}\lbrace s_k^*\rbrace =-\phi _{s_k}\)  to the coordinate system such that the symbol of interest is placed on the real axis. This is done by multiplying both \(s_k\)  and \(y_k\)  by \(e^{-j\phi _{s_k}}\)  which results in
\(\quad e^{-j\phi _{s_k}} s_k=1, \quad \omega _k= e^{-j\phi _{s_k}} y_k .\) 
